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Home Q & A Board Science-Related Homework Help Physics
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symbo symbo
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7 years ago
The major constituents of the Earth's atmosphere are
A)   95% carbon dioxide and some water vapor.
B)   methane, ammonia, water vapor, and carbon dioxide in about equal amounts.
C)   77% oxygen and 21% nitrogen.
D)   77% nitrogen and 21% oxygen.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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7 years ago
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symbo Author
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7 years ago
this is exactly what I needed
djeghri
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Yesterday
Helped a lot
gmiannotti
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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